By Craig Hlavaty May 20, 2010

In 2007, J.R. Cohen took over Coffee Groundz, the Midtown-area coffeehouse, and began tweeting. He personalized the Twitter account and used it to talk to his customers directly, to take orders during the morning rush and to promote the charity events he began hosting... More >>>

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Chris Curry

J.R. Cohen's BlackBerry is front stage, center, in keeping his Twitter Universe going as he juggles the demands of three separate accounts.